Ten years after: what are the top 5 ?

We've had a decade now of XML and there's been plenty of time for reality to set 
in. (Recall the early claims that XML was going to take over computing (XML 
operating systems, etc.), global e-business (UDDI, ebXML), and so on.

So what are the five most important XML vocabularies (those having the most 
influence on the way we compute today)?

RSS certainly qualifies. What others belong in the top 5?




======== Ken North ===========
www.KNComputing.com

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